Column Addition: 307 + 71
Addition with Regrouping Calculator
What is 307 + 71?
Answer
307 + 71 =
378
No regrouping: each column is added on its own
| 3 | 0 | 7 | |
| + | 7 | 1 | |
| 3 | 7 | 8 |
Column by column: 307 + 71
- Ones: 7 + 1 = 8 — write 8.
- Tens: 0 + 7 = 7 — write 7.
- Hundreds: nothing to add — write 3.
307 + 71 = 378
Second check: 378 − 307 = 71
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